US20070032780A1 - Intra-urethral catheters - Google Patents
Intra-urethral catheters Download PDFInfo
- Publication number
- US20070032780A1 US20070032780A1 US10/571,276 US57127606A US2007032780A1 US 20070032780 A1 US20070032780 A1 US 20070032780A1 US 57127606 A US57127606 A US 57127606A US 2007032780 A1 US2007032780 A1 US 2007032780A1
- Authority
- US
- United States
- Prior art keywords
- tube
- lumen
- patient
- catheter
- membraneous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0017—Catheters; Hollow probes specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/02—Holding devices, e.g. on the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
Abstract
An intra-urethral catheter for a male patient, has a lumen (7) interrupted within the prostatic space (S) of the patient's urethra (U), by a blockage (8), and upper and lower by-pass openings (9,10) through the catheter-wall (6) are located one above and one below the blockage (8). The upper opening (9) discharges urine collected from the bladder (B) to flush the prostatic space (S), and the lower opening (10) passes the urine back into the lower part (7″) of the lumen for discharge. In a modification, the length of the catheter below the sphincter (M) of the bulbar urethra and the external urethral orifice (O), is of membraneous form (11), and at the external urethral orifice (O) extends into a portion (12) for folding back over the glans (G). A ring (13) retains the folded-back portion (12) on the glans (G).
Description
- This application is a national stage of PCT/GB2004/003859 filed Sep. 10, 2004 which claims priority from British Application Serial No. 0321120.8 filed Sep. 10, 2003.
- This invention is concerned with intra-urethral catheters for male patients.
- According to one aspect of the present invention there is provided a catheter for intra-urethral catheterisation of a male patient, wherein the lumen of the catheter is interrupted within a portion of the catheter that is for positioning within the prostatic part of the patient's urethra during catheterisation, and two by-pass openings through the catheter-wall are located one above and one below the interruption, the upper opening for discharging urine from the upper part of the lumen into the prostatic part of the urethra, and the lower opening for passing the urine from the prostatic part of the urethra into the lower part of the lumen for discharge therefrom.
- Secretions from the prostatic part of the urethra are normally flushed away in the flow of urine from the bladder during micturition, but catheterisation using known forms of intra-urethral catheter creates a dead space in which the secretions are retained. Retention of the secretions can readily become a significant source of infection of the bladder, the upper urinary tract, the seminal vesicles, the vas deference, the epididymis and/or the testes. The catheter of the present invention has the advantage that it enables continued flushing away of the secretions, in the urine drained from the bladder, and so allows for catheterisation to be maintained over longer periods than is otherwise possible or prudent with known forms of intra-urethral catheter.
- The upper and lower openings are preferably located on opposite sides of the tube from one another so that urine draining from the upper of the two openings flows round the outside of the catheter in returning to the catheter-lumen through the lower opening, and thereby flushes the prostatic part of the urethra more thoroughly than otherwise would be the case. There may, however, be more than one upper opening and/or more than one lower opening in the catheter-wall.
- A portion of the length of the catheter that is for positioning within the penile urethra between the bulbar urethra and the external urethral orifice during catheterisation, may be of membraneous form, and at its proximal end for location at the external urethral orifice may extend into a portion for folding back over the glans. The provision of a membraneous portion of this nature has advantages for avoiding discomfort and nuisance often experienced by patients with known catheters where the proximal end of the catheter projects and hangs down from the penis. In this context, moreover, the provision of a membraneous portion is applicable to intra-urethral catheters generally whether or not provision for flushing the prostatic part of the urethra is included.
- Thus, according to another aspect of the invention there is provided a catheter for intra-urethral catheterisation of a male patient, wherein a portion of the length of the catheter that is for positioning within the penile urethra between the bulbar urethra and the external urethral orifice during catheterisation, is of membraneous form, and at its proximal end for location at the external urethral orifice extends into a portion for folding back over the glans.
- The membraneous portion of the catheter-length may be of elastic membrane or film, for example latex, and the portion for folding back over the glans may include an elastic ring for retaining it over the glans.
- A catheter for intra-urethral catheterisation of a male patient, in accordance with the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
-
FIG. 1 is a sectional view illustrative of the catheter of the invention during use in the body of a male patient; -
FIG. 2 is an enlarged sectional view of a portion of the catheter-length; and -
FIG. 3 is illustrative of a modification of the catheter ofFIGS. 1 and 2 . - Referring to
FIG. 1 , the intra-urethral catheter of the invention is formed by atube 1 of plastics material that has side-openings 2 in its otherwise-closeddistal tip 3. In the catheterised male patient (as illustrated), thetube 1 extends from itsproximal end 4 into the penis P and throughout the length of the urethra U to locate thetip 3 projecting into the patient's bladder B. The catheter is restrained from withdrawal by aballoon 5 which surrounds thetube 1 below thetip 3, and which is inflated within the bladder B through a continuous air-passage (not shown) within the catheter-wall 6. - Urine collecting in the bladder B drains through the
openings 2 into thelumen 7 of the indwellingtube 1 for discharge from theproximal end 4 of the catheter. If the catheter were of known form, thelumen 7 would be continuous throughout the length of thetube 1, so that flow of the drained urine would be contained by thetube 1 throughout the length of the urethra U. Thus, secretions within the prostatic space S of the urethra U would not be flushed away as occurs during normal (un-catheterised) micturition, and could readily become a seat of infection, especially during long-term catheterisation. - With the catheter of the present invention, the danger of such infection is very significantly reduced by causing the drained urine to flush the space S. To this end, and referring also to
FIG. 2 , thelumen 7 is interrupted throughout a portion of the catheter-length located within the space S, by ablockage 8 that extends between upper andlower openings wall 6. Urine draining from the bladder B through theopenings 2 into theupper part 7′ of thelumen 7 is forced to by-pass theblockage 8 by flowing into the space S via theopening 9 and then back into thelower part 7″ of thelumen 7, via the opening 10. - The
openings tube 1 from one another so that the by-pass flow is round thetube 1. The urine drained from the bladder B as a result washes substantially the whole space S, carrying the secretions with it to be discharged from theproximal end 4 of the catheter. The space S within the prostatic part of the urethra (extending for a distance of about 3 cm below the bladder B) is accordingly flushed substantially free from accumulation of secretions, and the risk of infection is reduced. - The
blockage 8 may be formed by a length of rod sealed into thelumen 7 of thetube 1, or, more preferably is formed as an integral part of the catheter in manufacture. - With the catheter described above, the
proximal end 4 of the catheter projects from the penis P. This can be found to be uncomfortable and a nuisance for the patient especially in those circumstances in which he is mobile independently or in a wheelchair. Indeed, in certain circumstances where the bladder is acontractile, or where it is contractile but not hyperactive, it is not necessary to have retained-connection to the catheter so projection from the penis is unnecessary. The catheter described above can be modified according to another to adapt it to this situation and provide the patient with less nuisance and improved comfort, whilst at the same time maintaining its function of urine-drainage and washing of the prostatic part of the urethra. - In the latter respect, the modification involves shortening the
tube 1 so that it extends from just before (that is, proximal to) the bulbar part of the urethra to the bladder. As illustrated inFIG. 3 , the removed part of thetube 1 is replaced by atube 11 of very thin elastic membrane or film (of latex or other material such as used for condoms) which continues the catheter down the urethra U within the penis P to emerge from the external urethral orifice O and fold back over the glans G. The folded-back end 12 of the membraneous-tube 11 terminates in anelastic ring 13 similar to that of a condom, that retains it in place over the surface of the glans G. - The short length of comparatively-
solid tube 1 at the distal end of the modified catheter is effective within the bulbar part of the urethra U to hold the sphincter M, open. This allows urine which enters thetube 1 through theopenings 2 and flushes the prostatic part of the urethra before entering thelower part 7″ of thelumen 7 as described above in connection withFIGS. 1 and 2 , to pass and not be blocked by contraction of the muscles of the sphincter M. - Once the urine has passed from the
tube 1 within the bulbar part of the urethra into the membraneous-tube 11 there is no other anatomical structure to restrict its flow for discharge as though naturally through the external urethral orifice O. - The use of the
membraneous tube 11 has the advantage that nothing projects from the penis P to hang down from it as a potential nuisance or as a source of discomfort. Moreover, thetube 11 has elasticity that allows it to extend with elongation of the penis P during erection. - Considerations that apply to the use and advantages of the catheter of
FIG. 3 under various conditions of the patient, are: -
- (a) In the condition in which the bladder is acontractile but the sphincter is not relaxed, urine cannot pass the barrier of the sphincter even with build up of urine-pressure in the bladder or with the application of safely-moderate external pressure on the abdominal wall or straining. Use of the catheter allows urine to pass the sphincteric barrier under control of the patient applying pressure on the abdominal wall.
- (b) In the condition in which the bladder is contractile but not hyperactive, voiding of the bladder is spontaneous though the interval between voidings is sufficiently long and more or less regular. Therefore, the timing of voiding is to a certain extent predictable and controllable depending on the volume of water intake and other factors. The patient has sufficient time to prepare himself for urine drainage and collection.
- (c) In the condition in which the bladder is contractile and hyperactive, the spontaneous voiding is frequent, uncontrollable and unpredictable. In such cases, a penile sheath may be attached to the folded-
back end 12 of the catheter over the glans, to collect the urine at any time. - (d) In the condition in which compliance of the wall of the bladder is so low (the elasticity of the bladder is damaged), pressure in the bladder cavity may always be higher than atmospheric pressure even if the bladder is acontractile and there is only a small amount of urine in it. As a result, urine flow may be almost constant, and in this case a penile sheath may be attached to the folded-
back end 12 of the catheter over the glans for urine-collection.
- Where one-off direct collection of urine is necessary, this can be achieved simply by inserting a tube in the
tube 11 within the penile urethra. On the other hand where long-term collection is required this can be facilitated by use of a penile sheath attached on top of the fold-back part of theportion 12 as referred to above, regardless of the type of bladder function. - Although the use of the membraneous tube is described above in the context of the catheter of
FIGS. 1 and 2 having provision for flushing of the prostatic part of the urethra, its application is not limited to this. It may be used generally for intra-urethral catheters with or without provision for any such flushing.
Claims (15)
1-13. (canceled)
14. A catheter for intra-urethral catheterisation of a male patient, the catheter comprising an elongate tube having a length to extend throughout the patient's urethra, the tube comprising a tubular wall defining upper and lower lumen-parts of the tube spaced apart along the length of the tube from one another, a distal end of the tube for location in the patient's bladder to drain urine from the bladder into the upper lumen-part of the tube, a proximal end of the tube for location exiting the patient's penis to discharge urine from the lower lumen-part of the tube, and a portion of the length of the tube extending between the upper and lower lumen-parts of the tube for location within the prostatic part of the patient's urethra during catheterisation;
wherein the tube has an upper by-pass opening through the tubular wall of the tube from the upper lumen-part of the tube for draining urine from the upper-lumen part of the tube into the prostatic part of the patient's urethra, and a lower by-pass opening through the tubular wall of the tube into the lower lumen-part of the tube for draining urine from the prostatic part of the patient's urethra into the lower-lumen part of the tube for discharge from the proximal end of the tube.
15. The catheter according to claim 14 , wherein the upper by-pass opening is located on a first of two opposite sides of the tube, and the lower by-pass opening is located on the second of the two opposite sides of the tube.
16. The catheter according to claim 14 , wherein there are a plurality of upper by-pass openings through the tubular wall of the tube from the upper lumen-part of the tube for draining urine from the upper-lumen part of the tube into the prostatic part of the patient's urethra, and a plurality of lower by-pass openings through the tubular wall of the tube into the lower lumen-part of the tube for draining urine from the prostatic part of the patient's urethra into the lower-lumen part of the tube for discharge from the proximal end of the tube.
17. The catheter according claim 14 , wherein the tubular wall of the tube defines an intermediate lumen-part extending throughout said portion of the length of the tube between the upper lumen-part and the lower lumen-part of the tube, the catheter including means blocking the intermediate lumen-part from passing urine.
18. The catheter according to claim 17 , wherein the means blocking the intermediate lumen-part from passing urine is a length of rod sealed within the intermediate lumen-part.
19. The catheter according claim 14 , wherein the tube is sealed closed throughout said portion of its length extending between the upper lumen-part and the lower lumen-part of the tube for blocking passage of urine within the tube between the upper lumen-part and the lower lumen-part of the tube.
20. The catheter according to claim 14 wherein the length of tube includes a membraneous portion for positioning during catheterisation within the patient's penile urethra between the male patient's bulbar urethra and external urethral orifice, the membraneous portion at the external urethral orifice extending to the proximal end of the tube in a membraneous fold-back portion for folding back over the glans of the patient's penis.
21. The catheter according to claim 20 , wherein the fold-back portion includes an elastic ring for retaining the fold-back portion folded back over the glans of the patient's penis.
22. The catheter according to claim 20 , wherein the membraneous fold-back portion is one of an elastic membrane and membraneous film.
23. The catheter according to claim 20 , wherein the membraneous fold-back portion is latex.
24. A catheter for intra-urethral catheterisation of a male patient, the catheter having a proximal end and including a membraneous portion for positioning during catheterisation within the patient's penile urethra between the male patient's bulbar urethra and external urethral orifice, and wherein the membraneous portion extends to the proximal end of the catheter in a membraneous fold-back portion for folding back over the glans of the patient's penis.
25. The catheter according to claim 24 , wherein the fold-back portion includes an elastic ring for retaining the fold-back portion folded back over the glans of the patient's penis.
26. The catheter according to claim 24 , wherein the membraneous fold-back portion is one of an elastic membrane and a membraneous film.
27. The catheter according to claim 24 , wherein the membraneous fold-back portion is latex.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0321120.8A GB0321120D0 (en) | 2003-09-10 | 2003-09-10 | Catheters |
GB0321120.8 | 2003-09-10 | ||
PCT/GB2004/003859 WO2005023353A2 (en) | 2003-09-10 | 2004-09-10 | Intra-urethral catheters |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/008,670 Continuation US8042488B2 (en) | 2004-08-10 | 2011-01-18 | Electrostatic coating apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
US20070032780A1 true US20070032780A1 (en) | 2007-02-08 |
US7857807B2 US7857807B2 (en) | 2010-12-28 |
Family
ID=29226774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/571,276 Expired - Fee Related US7857807B2 (en) | 2003-09-10 | 2004-09-10 | Intra-urethral catheters |
Country Status (4)
Country | Link |
---|---|
US (1) | US7857807B2 (en) |
EP (1) | EP1680169B1 (en) |
GB (3) | GB0321120D0 (en) |
WO (1) | WO2005023353A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110028943A1 (en) * | 2008-01-04 | 2011-02-03 | Kenneth Glenn Lawson | Synthetic polyisoprene foley catheter |
US20110178507A1 (en) * | 2008-06-30 | 2011-07-21 | C. R. Bard, Inc. | Polyurethane/polyisoprene blend catheter |
CN110152169A (en) * | 2019-06-25 | 2019-08-23 | 深圳市儿童医院 | A kind of urethral stent that hypospadias surgery uses |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100312225A1 (en) * | 2009-06-03 | 2010-12-09 | John Anderson Armistead | Wholly indwelling, valve-actuated, urinary catheter |
CN202892630U (en) * | 2012-01-06 | 2013-04-24 | 北京东方潮汐科技发展有限公司 | Positive-feedback catheter |
CN105343988B (en) * | 2015-12-10 | 2018-08-17 | 宁波冠瑞医疗器械有限公司 | Autocontrol catheter |
ES2677483B1 (en) * | 2017-02-02 | 2019-10-03 | Mora Carlos Nunez | URINARY CATHETER |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2642874A (en) * | 1951-06-04 | 1953-06-23 | Wilmer B Keeling | Instrument for treating prostate glands |
US3769981A (en) * | 1972-02-09 | 1973-11-06 | Kendall & Co | Urinary catheter |
US4337775A (en) * | 1980-11-24 | 1982-07-06 | Irving Levine | Catheter drainage and protection unit |
US4589874A (en) * | 1985-03-21 | 1986-05-20 | Hollister Incorporated | External male catheter and applicator collar therefor |
US4878901A (en) * | 1986-10-10 | 1989-11-07 | Sachse Hans Ernst | Condom catheter, a urethral catheter for the prevention of ascending infections |
US5007897A (en) * | 1989-05-30 | 1991-04-16 | Kalb Irvin M | Drug delivery catheter |
US5591145A (en) * | 1994-08-03 | 1997-01-07 | Sachse; Hans-Ernst | Catheter with wall perforations |
US6080142A (en) * | 1994-08-03 | 2000-06-27 | Sachse; Hans-Ernest | Catheter with grooved wall |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2528273C3 (en) * | 1975-04-12 | 1981-07-23 | Fabian, Karl, Dr.Med., 5300 Bonn | catheter |
US4140127A (en) | 1977-04-08 | 1979-02-20 | The Kendall Company | Catheter assembly |
DE3202713C2 (en) * | 1982-01-28 | 1986-02-13 | Hans E. Prof. Dr.med. 8500 Nürnberg Sachse | Indwelling urethral catheter |
DE4130434A1 (en) | 1991-09-13 | 1993-03-18 | Sachse Hans | Catheter preventing rising infection - has tube inside urethra allowing flushing of wall bearing against it by urine |
-
2003
- 2003-09-10 GB GBGB0321120.8A patent/GB0321120D0/en not_active Ceased
-
2004
- 2004-09-10 GB GB0420120A patent/GB2405796B/en not_active Expired - Fee Related
- 2004-09-10 EP EP04768406A patent/EP1680169B1/en not_active Not-in-force
- 2004-09-10 WO PCT/GB2004/003859 patent/WO2005023353A2/en active Application Filing
- 2004-09-10 US US10/571,276 patent/US7857807B2/en not_active Expired - Fee Related
- 2004-09-10 GB GB0613140A patent/GB2429408B/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2642874A (en) * | 1951-06-04 | 1953-06-23 | Wilmer B Keeling | Instrument for treating prostate glands |
US3769981A (en) * | 1972-02-09 | 1973-11-06 | Kendall & Co | Urinary catheter |
US4337775A (en) * | 1980-11-24 | 1982-07-06 | Irving Levine | Catheter drainage and protection unit |
US4589874A (en) * | 1985-03-21 | 1986-05-20 | Hollister Incorporated | External male catheter and applicator collar therefor |
US4878901A (en) * | 1986-10-10 | 1989-11-07 | Sachse Hans Ernst | Condom catheter, a urethral catheter for the prevention of ascending infections |
US5007897A (en) * | 1989-05-30 | 1991-04-16 | Kalb Irvin M | Drug delivery catheter |
US5591145A (en) * | 1994-08-03 | 1997-01-07 | Sachse; Hans-Ernst | Catheter with wall perforations |
US6080142A (en) * | 1994-08-03 | 2000-06-27 | Sachse; Hans-Ernest | Catheter with grooved wall |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110028943A1 (en) * | 2008-01-04 | 2011-02-03 | Kenneth Glenn Lawson | Synthetic polyisoprene foley catheter |
US8633268B2 (en) | 2008-01-04 | 2014-01-21 | C.R. Bard, Inc. | Synthetic polyisoprene foley catheter |
US20110178507A1 (en) * | 2008-06-30 | 2011-07-21 | C. R. Bard, Inc. | Polyurethane/polyisoprene blend catheter |
US8795573B2 (en) | 2008-06-30 | 2014-08-05 | C.R. Bard, Inc. | Polyurethane/polyisoprene blend catheter |
CN110152169A (en) * | 2019-06-25 | 2019-08-23 | 深圳市儿童医院 | A kind of urethral stent that hypospadias surgery uses |
Also Published As
Publication number | Publication date |
---|---|
WO2005023353A3 (en) | 2005-07-21 |
GB2429408A (en) | 2007-02-28 |
WO2005023353A2 (en) | 2005-03-17 |
EP1680169B1 (en) | 2012-11-28 |
GB2405796B (en) | 2006-09-20 |
EP1680169A2 (en) | 2006-07-19 |
US7857807B2 (en) | 2010-12-28 |
GB0321120D0 (en) | 2003-10-08 |
GB2405796A (en) | 2005-03-16 |
GB0420120D0 (en) | 2004-10-13 |
GB2429408B (en) | 2007-05-23 |
GB0613140D0 (en) | 2006-08-09 |
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